class convention

I suggest a convention for classes to make from_doc() the first function since this documents the relationship between the class variables and the lucene fields.

I am not sure. The new() function is the most important in my opinion because it shows what we can do with the model object. I don't like to see the new() function at the end of the source file.

new() wouldn't be at the end, it would be second.  Think of a Java class.  The member variables are first.  from_doc() is like this part of the Java code.

Okay, I agree.

closing